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make/README.W32.template
Paul Smith afbecbd9dc * all: Update Copyright statements for 2018
2018-07-01 12:22:04 -04:00

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This version of GNU make has been tested on:
Microsoft Windows 2000/XP/2003/Vista/7/8/10
It has also been used on Windows 95/98/NT, and on OS/2.
It builds with the MinGW port of GCC (tested with GCC 3.4.2, 4.8.1,
and 4.9.3).
It also builds with MSVC 2.x, 4.x, 5.x, 6.x, 2005, 2008, 2010, 2012,
2013, and 2015 as well as with .NET 7.x and .NET 2003.
Building with Guile is supported (tested with Guile 2.0.x). To build
with Guile, you will need, in addition to Guile itself, its dependency
libraries and the pkg-config program. The latter is used to figure out
which compilation and link switches and libraries need to be mentioned
on the compiler command lines to correctly link with Guile. A Windows
port of pkg-config can be found on ezwinports site:
http://sourceforge.net/projects/ezwinports/
The libraries on which Guile depends can vary depending on your
version and build of Guile. At the very least, the Boehm's GC library
will be needed, and typically also GNU MP, libffi, libunistring, and
libtool's libltdl. Whoever built the port of Guile you have should
also provide you with these dependencies or a URL where to download
them. A precompiled 32-bit Windows build of Guile is available from
the ezwinports site mentioned above.
The Windows port of GNU make is maintained jointly by various people.
It was originally made by Rob Tulloh.
It is currently maintained by Eli Zaretskii.
Do this first, regardless of the build method you choose:
---------------------------------------------------------
1. Edit config.h.W32 to your liking (especially the few shell-related
defines near the end, or HAVE_CASE_INSENSITIVE_FS which corresponds
to './configure --enable-case-insensitive-file-system'). (We don't
recommend to define HAVE_CASE_INSENSITIVE_FS, but you may wish to
consider that if you have a lot of files whose names are in upper
case, while Makefile rules are written for lower-case versions.)
Building with (MinGW-)GCC using build_w32.bat
---------------------------------------------
2. Open a W32 command prompt for your installed (MinGW-)GCC, setup a
correct PATH and other environment variables for it, then execute ...
.\build_w32.bat gcc
This produces gnumake.exe in the GccRel directory.
If you want a version of GNU make built with debugging enabled,
add the --debug option. Output goes into the GccDebug directory.
The batch file will probe for Guile installation, and will build
gnumake.exe with Guile if it finds it. If you have Guile
installed, but want to build Make without Guile support, type
.\build_w32.bat --without-guile gcc
Building with (MSVC++-)cl using build_w32.bat
---------------------------------------------
2. Open a command shell, then execute ...
.\build_w32.bat
This produces a 64bit Release build of gnumake.exe in .\WinRel, using
the compiler found on the %Path%. If no compiler is found, the batch
file will probe your system and choose the newest MSVC version it can
find.
If you want a 32bit version of GNU make, add the --x86 option.
If you want a Debug build of GNU make, add the --debug option. Output
will go into the .\WinDebug directory.
The batch file will probe for Guile installation, and will build
gnumake.exe with Guile if it finds it. If Guile is installed,
but you prefer to build GNU make without Guile support, add the
--without-guile option.
Building with (MinGW-)GCC using GNU make
----------------------------------------
2. If you already have a version of GNU make available you can use it
to build this version. Open a W32 command prompt for your installed
(MinGW-)GCC, setup a correct PATH and other environment variables
for it, then execute ...
make -f Basic.mk TOOLCHAIN=gcc
This produces GccRel\gnumake.exe.
If you want a version of GNU make built with debugging enabled,
add the TARGET_TYPE=debug option:
make -f Basic.mk TOOLCHAIN=gcc TARGET_TYPE=debug
The makefile doesn't support Guile integration. Use build_w32.bat
if you want to build with Guile support.
Building with (MSVC++-)cl using GNU make
----------------------------------------
2. If you already have a version of GNU make available you can use it
to build this version. Open a W32 command prompt for your installed
(MSVC++-)cl, setup a correct PATH and other environment variables
for it (usually via executing vcvars32.bat or vsvars32.bat from the
cl-installation, or using a corresponding start menu entry from the
cl-installation), then execute ...
make -f Basic.mk
This produces an optimized WinRel/gnumake.exe.
If you want a version of GNU make built with debugging enabled,
add the TARGET_TYPE=debug option:
make -f Basic.mk TARGET_TYPE=debug
The makefile doesn't support Guile integration. Use build_w32.bat
if you want to build with Guile support.
Running the test suite
----------------------
3. You will need an installation of Perl. Be sure to use a relatively
modern version: older versions will sometimes throw spurious errors.
To run the suite after building using GNU make, use:
make -f Basic.mk check
Alternatively if you'd like to run tests by hand, use:
cd tests
.\run_make_tests.bat -make <path-to-make>
I've found <path-to-make> seems to want forward-slashes in the path.
For example if building with .\build_w32.bat non-debug, use:
cd tests
.\run_make_tests.bat -make ../WinRel/gnumake.exe
I've tested this with the MSYS2 shell and POSIX tools installation
that you get by installing Git for Windows.
-------------------
-- Notes/Caveats --
-------------------
GNU make on Windows 32-bit platforms:
This version of make is ported natively to Windows32 platforms
(Windows NT 3.51, Windows NT 4.0, Windows 2000, Windows XP,
Windows 95, and Windows 98). It does not rely on any 3rd party
software or add-on packages for building. The only thing
needed is a Windows compiler. Two compilers supported
officially are the MinGW port of GNU GCC, and the various
versions of the Microsoft C compiler.
Do not confuse this port of GNU make with other Windows32 projects
which provide a GNU make binary. These are separate projects
and are not connected to this port effort.
GNU make and sh.exe:
This port prefers if you have a working sh.exe somewhere on
your system. If you don't have sh.exe, the port falls back to
MSDOS mode for launching programs (via a batch file). The
MSDOS mode style execution has not been tested that carefully
though (The author uses GNU bash as sh.exe).
There are very few true ports of Bourne shell for NT right now.
There is a version of GNU bash available from Cygnus "Cygwin"
porting effort (http://www.cygwin.com/).
Other possibilities are the MKS version of sh.exe, or building
your own with a package like NutCracker (DataFocus) or Portage
(Consensys). Also MinGW includes sh (http://mingw.org/).
GNU make and brain-dead shells (BATCH_MODE_ONLY_SHELL):
Some versions of Bourne shell do not behave well when invoked
as 'sh -c' from CreateProcess(). The main problem is they seem
to have a hard time handling quoted strings correctly. This can
be circumvented by writing commands to be executed to a batch
file and then executing the command by calling 'sh file'.
To work around this difficulty, this version of make supports
a batch mode. When BATCH_MODE_ONLY_SHELL is defined at compile
time, make forces all command lines to be executed via script
files instead of by command line. In this mode you must have a
working sh.exe in order to use parallel builds (-j).
A native Windows32 system with no Bourne shell will also run
in batch mode. All command lines will be put into batch files
and executed via $(COMSPEC) (%COMSPEC%). However, parallel
builds ARE supported with Windows shells (cmd.exe and
command.com). See the next section about some peculiarities
of parallel builds on Windows.
Support for parallel builds
Parallel builds (-jN) are supported in this port. The number of
concurrent processes has a hard limit of 4095.
GNU make and Cygnus GNU Windows32 tools:
Good news! Make now has native support for Cygwin sh. To enable,
define the HAVE_CYGWIN_SHELL in config.h and rebuild make
from scratch. This version of make tested with B20.1 of Cygwin.
Do not define BATCH_MODE_ONLY_SHELL if you use HAVE_CYGWIN_SHELL.
GNU make and the MKS shell:
There is now semi-official support for the MKS shell. To turn this
support on, define HAVE_MKS_SHELL in the config.h.W32 before you
build make. Do not define BATCH_MODE_ONLY_SHELL if you turn
on HAVE_MKS_SHELL.
GNU make handling of drive letters in pathnames (PATH, vpath, VPATH):
There is a caveat that should be noted with respect to handling
single character pathnames on Windows systems. When colon is
used in PATH variables, make tries to be smart about knowing when
you are using colon as a separator versus colon as a drive
letter. Unfortunately, something as simple as the string 'x:/'
could be interpreted 2 ways: (x and /) or (x:/).
Make chooses to interpret a letter plus colon (e.g. x:/) as a
drive letter pathname. If it is necessary to use single
character directories in paths (VPATH, vpath, Path, PATH), the
user must do one of two things:
a. Use semicolon as the separator to disambiguate colon. For
example use 'x;/' if you want to say 'x' and '/' are
separate components.
b. Qualify the directory name so that there is more than
one character in the path(s) used. For example, none
of these settings are ambiguous:
./x:./y
/some/path/x:/some/path/y
x:/some/path/x:x:/some/path/y
Please note that you are free to mix colon and semi-colon in the
specification of paths. Make is able to figure out the intended
result and convert the paths internally to the format needed
when interacting with the operating system, providing the path
is not within quotes, e.g. "x:/test/test.c".
You are encouraged to use colon as the separator character.
This should ease the pain of deciding how to handle various path
problems which exist between platforms. If colon is used on
both Unix and Windows systems, then no ifdef'ing will be
necessary in the makefile source.
Pathnames and white space:
Unlike Unix, Windows 95/NT systems encourage pathnames which
contain white space (e.g. C:\Program Files\). These sorts of
pathnames are valid on Unix too, but are never encouraged.
There is at least one place in make (VPATH/vpath handling) where
paths containing white space will simply not work. There may be
others too. I chose to not try and port make in such a way so
that these sorts of paths could be handled. I offer these
suggestions as workarounds:
1. Use 8.3 notation. i.e. "x:/long~1/", which is actually
"x:\longpathtest". Type "dir /x" to view these filenames
within the cmd.exe shell.
2. Rename the directory so it does not contain white space.
If you are unhappy with this choice, this is free software
and you are free to take a crack at making this work. The code
in w32/pathstuff.c and vpath.c would be the places to start.
Pathnames and Case insensitivity:
Unlike Unix, Windows 95/NT systems are case insensitive but case
preserving. For example if you tell the file system to create a
file named "Target", it will preserve the case. Subsequent access to
the file with other case permutations will succeed (i.e. opening a
file named "target" or "TARGET" will open the file "Target").
By default, GNU make retains its case sensitivity when comparing
target names and existing files or directories. It can be
configured, however, into a case preserving and case insensitive
mode by adding a define for HAVE_CASE_INSENSITIVE_FS to
config.h.W32.
For example, the following makefile will create a file named
Target in the directory subdir which will subsequently be used
to satisfy the dependency of SUBDIR/DepTarget on SubDir/TARGET.
Without HAVE_CASE_INSENSITIVE_FS configured, the dependency link
will not be made:
subdir/Target:
touch $@
SUBDIR/DepTarget: SubDir/TARGET
cp $^ $@
Reliance on this behavior also eliminates the ability of GNU make
to use case in comparison of matching rules. For example, it is
not possible to set up a C++ rule using %.C that is different
than a C rule using %.c. GNU make will consider these to be the
same rule and will issue a warning.
SAMBA/NTFS/VFAT:
I have not had any success building the debug version of this
package using SAMBA as my file server. The reason seems to be
related to the way VC++ 4.0 changes the case name of the pdb
filename it is passed on the command line. It seems to change
the name always to to lower case. I contend that the VC++
compiler should not change the casename of files that are passed
as arguments on the command line. I don't think this was a
problem in MSVC 2.x, but I know it is a problem in MSVC 4.x.
The package builds fine on VFAT and NTFS filesystems.
Most all of the development I have done to date has been using
NTFS and long file names. I have not done any considerable work
under VFAT. VFAT users may wish to be aware that this port of
make does respect case sensitivity.
FAT:
Version 3.76 added support for FAT filesystems. Make works
around some difficulties with stat'ing of files and caching of
filenames and directories internally.
Bug reports:
Please submit bugs via the normal bug reporting mechanism which
is described in the GNU make manual and the base README.
-------------------------------------------------------------------------------
Copyright (C) 1996-2018 Free Software Foundation, Inc.
This file is part of GNU Make.
GNU Make is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3 of the License, or (at your option) any later
version.
GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
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